#include<iostream>
using namespace std;
typedef long long LL;
const int N = 1e8;
int main()
{
	//LL ans = 80 * 1e13;
	//cout << ans << endl;
	cout << "0";
	/*for (int i = 0; i < 8e9; i++) {
		cout << "00000";
	}*/
	return 0;
}